Which type of force exists as a result of positive and negative charges? A. Electromagnetic
B. Weak nuclear
C. Strong nuclear
D. Gravitational

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?